减小高装填密度发射装药膛内压力波的实验研究

研究了两种能降低某大口径火炮高装填密度发射装药的膛内压力波的点传方案。第一种点传火方案是在制式点传火结构基础上增加横向传火具，增加点火药包；第二种点传火方案是改变制式传火结构为低爆速传火结构，同时增加横向传火具。高装填密度发射装药射击试验表明，这两种点传火方案均能满足点传火要求。第一种点传火方案较制式可燃中心传火管能实现迅速全面的点火，但出现了压力波增大的现象。而第二种点传火方案较第一种点传火方案的传火速度快，能迅速建立点火压力，发射药床的着火延迟时间小，最重要的是能抑制膛内有害压力波。压力波的频谱分析表明在高装填密度装药中，采用第二种点传火方案能削弱和抑制压力波的高频振荡成分，改善其振动特性。

Experimental Study on Reducing the Pressure Wave of Gun Propelling Charge with High Loading Density

Two ignition methods are investigated to reduce pressure wave in large caliber gun propelling charge with high loading density. The first is adding crosswise igniter and upper ignition bag on the base of standard igniter, the second is using the low velocity detonation igniter instead of the standard igniter, at the same time adding the crosswise igniter. The firing test results of propelling charge with high loading density show that both of the two methods could met the request of ignition. Comparing with the standard igniter, the first ignition method could ignite the charge simultaneously and entirely, but the pressure wave phenomena in barrel is serious. The flame spreading velocity of the second ignition method is faster than of the first ignition method, and the ignition pressure could be established quickly, the ignition delay time of propelling charge is short. First of all, the pressure wave can be restrained. The frequency spectral analyses show that the second ignition method could weaken and restrain the high frequency vibration, improve the characteristic of vibration in high loading density charge.